It's called toning and is a form of tarnish that occurs when the coin reacts with oxygen (and some pollutants) in air.
Toning is prized by many collectors because it can be quite beautiful and is never the same on any two coins, so don't attempt to remove it.
Baby blue is a tint of blue, to make it add a little white to blue till you get the desired tint :)
they are both blue
An emerald with a blue tint is more valuable than one with a yellow tint.
light blue is just blue with a different tint. (add white)
A tint of blue, meaning a lighter color of blue.
The Hairdresser.........
Blue. it can be light but it has to have a tint of dark in it.
An emerald with a blue tint is more valuable than one with a yellow tint A+
An emerald with a blue tint is more valuable than one with a yellow tint.
It creates a clear aqueous solution with a blue tint.
An emerald with a blue tint is more valuable than one with a yellow tint.
the addition of white. then the dark blue will become sky blue,which is a tint of dark blue.